Parallelization of pseudo-particle modeling and its application in simulating gas-solid fluidization

JX Lu and JY Zhang and XW Wang and LM Wang and W Ge, PARTICUOLOGY, 7, 317-323 (2009).

DOI: 10.1016/j.partic.2009.04.003

Pseudo-Particle Modeling (PPM) is a particle method proposed by Ge and Li in 1996 Ge, W., & Li, J. (1996). Pseudo-particle approach to hydrodynamics of particle-fluid systems. In M. Kwauk & J. Li (Eds.), Proceedings of the 5th international conference on circulating fluidized bed (pp. 260-265). Beijing: Science Press and has been used to explore the microscopic mechanism in complex particle-fluid systems. But as a particle method, high computational cost remains a main obstacle for its large-scale application; therefore, parallel implementation of this method is highly desirable. Parallelization of two-dimensional PPM was carried out by spatial decomposition in this paper. The time costs of the major functions in the program were analyzed and the program was then optimized for higher efficiency by dynamic load balancing and resetting of particle arrays. Finally, simulation on a gas-solid fluidized bed with 102,400 solid particles and 1.8 x 10(7) pseudo- particles was performed successfully with this code, indicating its scalability in future applications. (C) 2009 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

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